Base of a seat



FIG. 1. is a front isometric view of a base of a seat;

FIG. 2. is a back isometric view of the base of the seat;

FIG. 3. is a front view of the base of the seat;

FIG. 4. is a rear view of the base of the seat;

FIG. 5. is a side view of the base of the seat;

FIG. 6. is an opposite side view of the base of the seat;

FIG. 7. is a top view of the base of the seat; and,

FIG. 8. is a bottom view of the base of the seat.

The broken lines depict portions of the base of the seat that form no part of the claimed design. 

CLAIM The ornamental design for a base of a seat, as shown and described. 